C111123313331323113313331333133313331323112133313331333121111131333231   >>    C11112331333132311331333133313331333132311213331333133312111113133323   <<    C111123313331323113313331333133313331323112133313331333121111131333233   >>      C111123313331323113313331333133313331323112133313331333121111131333232   >>